<div class="control-group">
    <?php echo form_open('admin/add_kelas'); ?>
    <label class="control-label" for="input01">Kelas</label>
    <div class="controls">
        <input id="input01" class="input-xlarge span3" type="text" name="kelas">
    </div>
    <p class="help-block">Ketikkan data di kolom di atas.</p>
    <button class="btn btn-primary" href="#"><i class="icon-plus icon-white"></i> Tambah</button>
    <?php echo form_close() ?>
</div>